| DEI Document | Jul. 28, 2021 | May 03, 2021 |
| DEI [Abstract] | ||
| Entity Central Index Key | 0001159167 | |
| Entity Incorporation, State or Country Code | DE | |
| Title of 12(b) Security | Common Stock, $0.01 par value | |
| Document Type | 8-K | |
| Document Period End Date | Jul. 28, 2021 | |
| Entity Registrant Name | iROBOT CORPORATION | |
| Entity Address, Address Line One | 8 Crosby Drive | |
| Entity Address, City or Town | Bedford | |
| Entity Address, State or Province | MA | |
| City Area Code | 781 | |
| Local Phone Number | 430-3000 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Emerging Growth Company | false | |
| Trading Symbol | IRBT | |
| Security Exchange Name | NASDAQ | |
| Entity File Number | 001-36414 | |
| Entity Tax Identification Number | 77-0259335 | |
| Entity Address, Postal Zip Code | 01730 | |
| Amendment Flag | false |
